[PATCH] btrfs: add fstrim test case on the sprout device

From: Anand Jain <anand.jain@oracle.com>
To: fstests@vger.kernel.org
Cc: linux-btrfs@vger.kernel.org
Subject: [PATCH] btrfs: add fstrim test case on the sprout device
Date: Fri, 30 Apr 2021 22:39:24 +0800	[thread overview]
Message-ID: <96fe1c0c8747d24ad6c45bc3f0a5551b8e1ebbde.1619793258.git.anand.jain@oracle.com> (raw)
In-Reply-To: <d6fcae756c5ce47da3527e5db4760d676420d950.1619783910.git.anand.jain@oracle.com>

Add fstrim test case on the sprout device, verify seed device
integrity.

Needs kernel patch [1] to pass the test case.
[1]
  btrfs: fix unmountable seed device after fstrim

Signed-off-by: Anand Jain <anand.jain@oracle.com>
---
 tests/btrfs/236     | 72 +++++++++++++++++++++++++++++++++++++++++++++
 tests/btrfs/236.out |  5 ++++
 tests/btrfs/group   |  1 +
 3 files changed, 78 insertions(+)
 create mode 100755 tests/btrfs/236
 create mode 100644 tests/btrfs/236.out

diff --git a/tests/btrfs/236 b/tests/btrfs/236
new file mode 100755
index 000000000000..599892bebf10
--- /dev/null
+++ b/tests/btrfs/236
@@ -0,0 +1,72 @@
+#! /bin/bash
+# SPDX-License-Identifier: GPL-2.0
+# Copyright (c) 2021 Oracle. All Rights Reserved.
+#
+# FS QA Test 236
+#
+# Check seed device integrity after fstrim on the sprout device.
+#
+#  Kernel bug is fixed by the commit:
+#    btrfs: fix unmountable seed device after fstrim
+
+seq=`basename $0`
+seqres=$RESULT_DIR/$seq
+echo "QA output created by $seq"
+
+here=`pwd`
+tmp=/tmp/$$
+status=1	# failure is the default!
+trap "_cleanup; exit \$status" 0 1 2 3 15
+
+_cleanup()
+{
+	cd /
+	rm -f $tmp.*
+}
+
+# get standard environment, filters and checks
+. ./common/rc
+. ./common/filter
+
+# remove previous $seqres.full before test
+rm -f $seqres.full
+
+# real QA test starts here
+
+# Modify as appropriate.
+_supported_fs btrfs
+_require_command "$BTRFS_TUNE_PROG" btrfstune
+_require_scratch_dev_pool 2
+_scratch_dev_pool_get 2
+
+seed=$(echo $SCRATCH_DEV_POOL | $AWK_PROG '{print $1}')
+sprout=$(echo $SCRATCH_DEV_POOL | $AWK_PROG '{print $2}')
+
+_mkfs_dev $seed
+_mount $seed $SCRATCH_MNT
+
+$XFS_IO_PROG -f -c "pwrite -S 0xab 0 1M" $SCRATCH_MNT/foo > /dev/null
+_scratch_unmount
+$BTRFS_TUNE_PROG -S 1 $seed
+
+# Mount the seed device and add the rw device
+_mount $seed $SCRATCH_MNT 2>&1 | _filter_scratch
+md5sum $SCRATCH_MNT/foo | _filter_scratch
+
+$BTRFS_UTIL_PROG device add -f $sprout $SCRATCH_MNT
+_scratch_unmount
+
+# Now remount
+_mount $sprout $SCRATCH_MNT
+$XFS_IO_PROG -f -c "pwrite -S 0xcd 0 1M" $SCRATCH_MNT/bar > /dev/null
+
+fstrim $SCRATCH_MNT
+
+_scratch_unmount
+_mount $seed $SCRATCH_MNT 2>&1 | _filter_scratch
+md5sum $SCRATCH_MNT/foo | _filter_scratch
+_scratch_unmount
+
+# success, all done
+status=0
+exit
diff --git a/tests/btrfs/236.out b/tests/btrfs/236.out
new file mode 100644
index 000000000000..2929d39395a8
--- /dev/null
+++ b/tests/btrfs/236.out
@@ -0,0 +1,5 @@
+QA output created by 236
+mount: SCRATCH_MNT: WARNING: device write-protected, mounted read-only.
+096003817ad2638000a6836e55866697  SCRATCH_MNT/foo
+mount: SCRATCH_MNT: WARNING: device write-protected, mounted read-only.
+096003817ad2638000a6836e55866697  SCRATCH_MNT/foo
diff --git a/tests/btrfs/group b/tests/btrfs/group
index 331dd432fac3..5032259244e0 100644
--- a/tests/btrfs/group
+++ b/tests/btrfs/group
@@ -238,3 +238,4 @@
 233 auto quick subvolume
 234 auto quick compress rw
 235 auto quick send
+236 auto quick seed trim
-- 
2.27.0

